l bought this pike from shark aquarium as a lenticulata but upon further research, I believe it to be
Crenicichla sp. 'venezuela': because I seen the other form of
Crenicichla sp. 'venezuela': in the tank along with mine. Mine has a gray body with black spot on tail but can show other colors when feeding or flaring etc. The others that were with mine had a bunch of black dots on their heads. I believe some were male and others female but do not know the sex of mine.
http://www.monsterfishkeepers.com/forums/showthread.php?t=74063 (the pics are in that link)